Introduction to poison ivy and its effects on the skin

Poison ivy is a plant commonly found in North America that can cause a troublesome rash when it comes into contact with the skin. The rash is caused by an allergic reaction to the plant's oil, known as urushiol. This oil is present in all parts of the poison ivy plant, including the leaves, stems, and roots. When urushiol comes into contact with the skin, it can cause a red, itchy rash that may develop into blisters. The severity of the rash can vary from person to person, with some individuals experiencing only mild symptoms while others may have a more severe reaction.